People who answered only one question in the MMP referendum are being reassured that their votes will still count.
The referendum was made up of two parts, the first asking if voters wanted to keep MMP or change the electoral system, the second asking people to choose between four alternativesystems.
On election day, a number of people chose not to select an alternative to MMP.
Some news organisations have reported that referendum votes that answered only one question were invalid but the Electoral Commission stressed today that that was incorrect.
"Voters can be reassured that their referendum votes will count even if they voted only in the first question," chief electoral officer Robert Peden said.
The referendum results will not be released until December 10, but advance votes suggest MMP will stay, with 53.7 per cent supporting the system and 24.6 per cent wanting to change.